Optical imaging lens

Abstract

An optical imaging lens comprises a first lens positioning unit, an imaging lens group and a light-transmitting element. The interior of the first lens positioning unit is hollow and is made of a light-proof material; the imaging lens group is mounted in the first lens positioning unit; the imaging lens group comprises a lens and an imaging surface, and the lens defines a maximum effective diameter in an optical effective area; the light-transmitting element is made of a light-proof material and is arranged in the first lens positioning unit, and the light-transmitting element surrounds the optical axis; besides, the light-transmitting element is provided with a light-transmitting hole facing the optical effective area of the lens so that the optical axis can pass through, the aperture of the light-transmitting hole is smaller than or equal to the maximum effective diameter of the lens, non-imaging light can be effectively blocked from passing through the lens through the configuration of the light-proof light-transmitting element, and the imaging quality is correspondingly improved.

Description

Technical Field

[0001] The present invention relates to an optical system, and in particular to an optical imaging lens. Background Art

[0002] In recent years, with the rise of portable electronic products with photography functions, the demand for optical systems has been increasing. The photosensitive elements of general optical systems are either Charge Coupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor (CMOS Sensor). With the advancement of semiconductor process technology, the pixel size of photosensitive elements has been reduced, and optical systems have gradually developed towards high-pixel areas, so the requirements for imaging quality are also increasing.

[0003] The traditional lens assembly structure uses a lens barrel to fix the relative position of the lens elements and also serves as a part to block non-imaging light. However, as portable electronic products continue to advance in pixel enhancement and miniaturization, the demand and development trend of optical systems are towards high pixel quality. However, the existing optical system does not have a light-shielding effect, and there are no opaque components inside the lens barrel, which cannot meet the high-pixel imaging quality effect of the optical system. Summary of the invention

[0004] In view of this, an implementation method of an embodiment of the present invention is to provide an optical imaging lens, wherein a light-proof light-transmitting element is provided inside the lens, which can effectively block non-imaging light from passing through the lens, thereby correspondingly improving the imaging quality.

[0005] In order to achieve the above-mentioned purpose, an optical imaging lens provided by a preferred embodiment of the present invention comprises a first lens positioning unit, an imaging lens group and at least one light-transmitting element; the first lens positioning unit is hollow inside and made of an opaque material, and one end of the first lens positioning unit has an object side port connected to the inside; the imaging lens group is installed in the first lens positioning unit; the imaging lens group includes at least one lens and an imaging surface from the object side port along an optical axis from an object side to an image side, the lens has a refractive power, and the lens has an optically effective area and an optically invalid area, and the optically invalid area surrounds the optically effective area. wherein the optical axis passes through the lens from the optically effective area, and the lens defines a maximum effective diameter in the optically effective area, and the imaging plane is located on one side of the lens relative to the object side port; the light-transmitting element is made of an opaque material, the light-transmitting element is installed in the first lens positioning unit, and is disposed on one of the object side and image side of the lens, and the light-transmitting element is disposed around the optical axis and facing the optically invalid area; in addition, the light-transmitting element has a light-transmitting hole facing the optically effective area of ​​the lens for the optical axis to pass through, and the aperture of the light-transmitting hole is less than or equal to the maximum effective diameter of the lens.

[0006] In one embodiment, the light-transmitting element satisfies the following condition: 0 μm<TILE≤50 μm, wherein TILE is the inner peripheral thickness of the light-transmitting element at the light-transmitting hole.

[0007] Another preferred embodiment of the present invention provides an optical imaging lens, comprising a first lens positioning unit, an imaging lens group and at least one light-transmitting element; the first lens positioning unit is hollow inside and made of an opaque material, and one end of the first lens positioning unit has an object side port; the imaging lens group is installed in the first lens positioning unit, and the imaging lens group includes a first lens, a second lens and an imaging surface from the object side port along an optical axis from an object side to an image side, the first lens and the second lens both have refractive power, wherein the first lens has a first optically effective area and a first optically invalid area, and the first optically invalid area surrounds the first optically effective area; the second lens has a second optically effective area and a second optically invalid area, the second optically effective area faces the first optically effective area, and the second optically invalid area surrounds the second optically effective area, and the imaging surface is opposite to the object side port and The first lens is located on one side of the second lens, wherein the optical axis passes through the first lens and the second lens from the first optical effective area and the second optical effective area respectively, and the first lens defines a first maximum effective diameter in the first optical effective area, and the second lens defines a second maximum effective diameter in the second optical effective area; the light-transmitting element is made of an opaque material and is disposed in the first lens positioning unit; the light-transmitting element surrounds the optical axis and is located between the first lens and the second lens, and is disposed on a side of the first optical invalid area of ​​the first lens facing the second optical invalid area of ​​the second lens, and in addition, the light-transmitting element has a light-transmitting hole facing the first optical effective area and the second optical effective area for the optical axis to pass through, and the aperture of the light-transmitting hole is less than or equal to the first maximum effective diameter of the first lens and the second maximum effective diameter of the second lens.

[0008] The effect of the present invention is that the optical imaging lens can effectively block non-imaging light from entering the imaging lens group through the design of the multiple light-transmitting elements, which not only reduces the interference of the optical imaging lens with the non-imaging light to improve the imaging quality, but also designs TILE conditions among the multiple light-transmitting elements to further reduce the size of each of the light-transmitting elements, thereby achieving the effect of miniaturization of the optical imaging lens and improving the optical imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The above and other features of the present invention will be described in detail with reference to the accompanying drawings.

[0010] Figure 1 FIG. 4 is a schematic structural diagram of an optical imaging lens according to a first preferred embodiment of the present invention.

[0011] Figure 2 for Figure 1 A partial enlarged view of the portion marked A.

[0012] Figure 3 It is a partial enlarged schematic diagram of the inner edge of the light-transmitting hole of the first light-transmitting element in the optical imaging lens of the first preferred embodiment of the present invention.

[0013] Figure 4A Schematic diagram (I) of the structure of the optical imaging lens of the first preferred embodiment of the present invention in which the inner ring segment of the first light-transmitting element is adjusted to a trapezoidal shape and the ALE condition is changed.

[0014] Figure 4B This is a structural schematic diagram (II) of the optical imaging lens of the first preferred embodiment of the present invention in which the inner ring segment of the first light-transmitting element is adjusted to a trapezoidal shape and the ALE condition is changed.

[0015] Figure 5A Schematic diagram (I) of the structure of the optical imaging lens of the first preferred embodiment of the present invention in which the inner ring segment of the first light-transmitting element is adjusted to an angular shape and matched with the change of TILE conditions.

[0016] Figure 5B This is a structural schematic diagram (II) of the optical imaging lens of the first preferred embodiment of the present invention in which the inner ring segment of the first light-transmitting element is adjusted to a trapezoidal shape and matched with the TILE condition change.

[0017] Fig. 6A Schematic diagram (I) of the structure of the optical imaging lens of the first preferred embodiment of the present invention in which the inner ring segment of the first light-transmitting element is adjusted to a trapezoidal shape and the ALE condition is changed.

[0018] Figure 6B This is a structural schematic diagram (II) of the optical imaging lens of the first preferred embodiment of the present invention in which the inner ring segment of the first light-transmitting element is adjusted to a trapezoidal shape and the ALE condition is changed.

[0019] Fig. 7A Schematic diagram (I) of the structure of the optical imaging lens of the first preferred embodiment of the present invention in which the inner ring segment of the first light-transmitting element is adjusted to an angular shape and matched with the change of TILE conditions.

[0020] Figure 7B This is a structural schematic diagram (II) of the optical imaging lens of the first preferred embodiment of the present invention in which the inner ring segment of the first light-transmitting element is adjusted to a trapezoidal shape and matched with the TILE condition change.

[0021] Figure 8 Schematic diagram of the structure in which the inner ring section of the first light-transmitting element in the optical imaging lens of the first preferred embodiment of the present invention is adjusted to a cone shape.

[0022] Fig. 9AThis is a structural schematic diagram (I) of the optical imaging lens of the first preferred embodiment of the present invention, in which the inner ring segment TILE condition of the first light-transmitting element is 1.0 μm and the OALE condition and IALE change are combined.

[0023] Fig. 9B This is a structural schematic diagram (II) of the optical imaging lens of the first preferred embodiment of the present invention, in which the TILE condition of the inner ring section of the first light-transmitting element is 3.0 μm and the OALE condition and IALE change are combined.

[0024] Fig. 9C This is a structural schematic diagram (II) of the optical imaging lens of the first preferred embodiment of the present invention, in which the TILE condition of the inner ring section of the first light-transmitting element is 5.0 μm and the OALE condition and IALE change are combined.

[0025] Fig. 10A This is a structural schematic diagram (I) of the optical imaging lens of the first preferred embodiment of the present invention, in which the inner ring segment TILE condition of the first light-transmitting element is 1.0 μm and the OALE condition and IALE change are combined.

[0026] Fig. 10B This is a structural schematic diagram (II) of the optical imaging lens of the first preferred embodiment of the present invention, in which the TILE condition of the inner ring section of the first light-transmitting element is 3.0 μm and the OALE condition and IALE change are combined.

[0027] Fig. 10C This is a structural schematic diagram (II) of the optical imaging lens of the first preferred embodiment of the present invention, in which the TILE condition of the inner ring section of the first light-transmitting element is 5.0 μm and the OALE condition and IALE change are combined.

[0028] Fig.11 FIG. 4 is a schematic structural diagram of an optical imaging lens according to a second preferred embodiment of the present invention.

[0029] Fig.12 for Fig.11 A partial enlarged view of the portion marked B.

[0030] Fig.13A FIG. 1 is a schematic diagram of a structure of a TOLE condition for adjusting a first light-transmitting element of an optical imaging lens according to a second preferred embodiment of the present invention (I).

[0031] Fig. 13B FIG. 2 is a schematic diagram of a structure of a TOLE condition for adjusting a first light-transmitting element of an optical imaging lens according to a second preferred embodiment of the present invention.

[0032] Fig. 13C Schematic diagram (III) of the TOLE condition structure of the optical imaging lens for adjusting the first light-transmitting element according to the second preferred embodiment of the present invention.

[0033] Fig.13D Schematic diagram (IV) of the TOLE condition structure of the optical imaging lens for adjusting the first light-transmitting element according to the second preferred embodiment of the present invention.

[0034] Fig.14A Schematic diagram (I) of the structure of the light transmission center axis of the first light transmission hole, the opening center axis of the object side port and the optical axis of the optical imaging lens of the second preferred embodiment of the present invention.

[0035] Fig. 14B This is a structural schematic diagram (II) of the light transmission center axis of the first light transmission hole, the opening center axis of the object side port and the optical axis of the optical imaging lens of the second preferred embodiment of the present invention.

[0036] Fig.15 FIG. 4 is a schematic structural diagram of an optical imaging lens according to a third preferred embodiment of the present invention.

[0037] Fig.16 for Fig.15 A partial enlarged view of the portion marked C.

[0038] Fig.17 FIG. 4 is a schematic structural diagram of an optical imaging lens according to a fourth preferred embodiment of the present invention.

[0039] Fig.18 FIG. 4 is a schematic structural diagram of an optical imaging lens according to a fifth preferred embodiment of the present invention.

[0040] Description of reference numerals:

[0041] 100, 200, 300, 400, 500: Optical imaging lens

[0042] 10, 10', 50, 60: First lens positioning unit

[0043] 11, 11', 51, 61: Mirror tube

[0044] 111, 111', 511, 611: light blocking ring

[0045] 112, 112', 512, 612: side port

[0046] 113',: External thread

[0047] 513: Shoulder

[0048] 12, 12', 52, 62: Mirror mount

[0049] 121': Assembly section

[0050] 122': Internal thread

[0051] 20, 70: Imaging lens group

[0052] 21, 71: First lens

[0053] 21A, 71A: First optical effective area

[0054] 21B, 71B: First optical ineffective area

[0055] 211, 711: side view

[0056] 212, 712: Like the side

[0057] 22, 72: Second lens

[0058] 22A, 72A: Second optical effective area

[0059] 22B, 72B: Second optical ineffective area

[0060] 221, 721: side view

[0061] 222, 722: Like the side

[0062] 23, 73: The third lens

[0063] 23A, 73A: Third optical effective area

[0064] 23B, 73B: Third optical ineffective area

[0065] 231, 731: side view

[0066] 232, 732: Like the side

[0067] 24, 74: The fourth lens

[0068] 241, 741: side view

[0069] 742: Like the side

[0070] 24A, 74A: Fourth optical effective area

[0071] 24B, 74B: Fourth optical ineffective area

[0072] 75: Fifth lens

[0073] 751: Side view

[0074] 752: Like the side

[0075] 75A: Fifth optical effective area

[0076] 75B: Fifth optical ineffective area

[0077] 76: The sixth lens

[0078] 761: Object side

[0079] 76A: Sixth optical effective area

[0080] 76B: Sixth optical ineffective area

[0081] 30, 30', 80: light-transmitting element

[0082] 31, 31', 81: first light-transmitting element

[0083] 31A: Inner Ring Section

[0084] 31B: Outer ring segment

[0085] 311, 811: First light hole

[0086] 312: Top side

[0087] 313: Bottom and side

[0088] 314: Inner oblique part

[0089] 315: Straight section

[0090] 316: First inner bevel

[0091] 317: Second inner bevel

[0092] 32, 32', 82: second light-transmitting element

[0093] 321, 821: Second light hole

[0094] 33, 33', 83: The third light-transmitting element

[0095] 331, 831: The third aperture

[0096] 34, 34', 84: Fourth light-transmitting element

[0097] 841: Fourth light hole

[0098] 85: Fifth light-transmitting element

[0099] 851: Fifth light hole

[0100] 40: Image sensor module

[0101] 90: Second lens positioning unit

[0102] 91: Ring

[0103] 92: Contact Department

[0104] Z: Optical axis

[0105] L, L': horizontal reference plane

[0106] CLE: Central Light Equilibrium

[0107] CPE: Open Center Axis

[0108] TILE: The inner peripheral thickness of the light-transmitting element at the light-transmitting hole

[0109] TOLE: The maximum outer peripheral thickness of the light-transmitting element corresponding to the outer ring segment

[0110] ALE: The inclination angle of the inner slope relative to the horizontal reference plane

[0111] OALE: the inclination angle of the first inner slope relative to the horizontal reference plane

[0112] IALE: The inclination angle of the second inner slope relative to the horizontal reference plane DETAILED DESCRIPTION

[0113] In order to more clearly illustrate the present invention, preferred embodiments are given and described in detail with reference to the accompanying drawings. Figure 1 , Figure 2 , is an optical imaging lens 100 according to a first embodiment of the present invention, which includes a first lens positioning unit 10 , an imaging lens group 20 and a plurality of light-transmitting elements 30 .

[0114] The first lens positioning unit 10 is hollow inside and is made of an opaque material. In the present embodiment, the first lens positioning unit 10 includes an integral lens barrel 11 and a lens base 12. One end of the lens barrel 11 is radially inwardly provided with a light-shielding ring 111. The inner edge of the light-shielding ring 111 surrounds an object side opening 112, and the object side opening 112 is communicated with the inside of the lens barrel 11. The object side opening 112 is coupled to the other end of the lens barrel 11 opposite to the lens base 12. In other embodiments, the lens barrel 11 can be coupled to the lens base 12 or detached from the lens base 11.

[0115] The imaging lens group 20 is installed in the lens barrel 11 of the first lens positioning unit 10; the imaging lens group 20 includes a first lens 21, a second lens 22, a third lens 23, a fourth lens 24 and an imaging surface (not shown) from the object side port 112 along an optical axis Z from an object side to an image side, and the first lens 21, the second lens 22, the third lens 23 and the fourth lens 24 have refractive powers and are arranged in sequence inside the lens barrel, as shown in FIG. Figure 2As shown, the first lens 21 is located inside the light-shielding ring 111, and the object side surface 211 of the first lens 21 is exposed at the object side opening 112 of the lens barrel 11, wherein the first lens 21 has a first optically effective area 21A and a first optically invalid area 21B, the first optically effective area 21A is correspondingly exposed at the object side opening 112, and the optical axis Z passes through the first optically effective area 21A, and the first optically invalid area 21B surrounds the first optically effective area 21A, the light-shielding ring 111 corresponds to the first optically invalid area 21B facing the object side surface 211 of the first lens 21, and the light-shielding ring 111 correspondingly blocks the first optically invalid area 21B of the first lens 21, in this embodiment, the first optically effective area 21A represents the area corresponding to the optical axis Z of the imaging lens group 20 and the imaging light passes through, and the first optically invalid area 21B represents the area surrounding the optical axis Z of the imaging lens group 20 and the imaging light does not pass through.

[0116] In addition, the first lens 21 defines a first maximum effective diameter in the first optically effective area 21A, wherein the first maximum effective diameter is defined by taking the object side surface 211 of the first lens 21 as an example, the optical axis Z passes through the first optically effective area 21A of the first lens 21, and the optical axis Z and the object side surface 211 of the first lens 21 form an intersection, and a vertical height from the optical axis Z is defined from the intersection as a starting point to the maximum effective radius, and the first maximum effective diameter is a distance perpendicular to the optical axis Z that is twice the maximum effective radius, wherein the maximum effective radius of the first lens 21 is defined as the maximum turning boundary point between the first optically effective area 21A and the first optically invalid area 21B.

[0117] The object-side surface 221 of the second lens 22 faces the image-side surface 212 of the first lens 21. The second lens 22 has a second optically effective area 22A and a second optically invalid area 22B. The second optically effective area 22A faces the first optically effective area 22A, and the optical axis Z passes through the second optically effective area 22A. The second optically invalid area 22B surrounds the second optically effective area 22A, and the second optically invalid area 22B faces the first optically invalid area 21B accordingly.

[0118] In addition, the second lens 22 defines a second maximum effective diameter in the second optically effective area 22A, and the definition of the second maximum effective diameter is the same as that of the first maximum effective diameter, that is, the optical axis Z passes through the second optically effective area 22A of the second lens 22, and the optical axis Z and the object-side surface 221 of the second lens 22 form an intersection, and a vertical height from the optical axis Z is defined from the intersection as a starting point to the maximum effective radius, and the second maximum effective diameter is a distance of twice the maximum effective radius perpendicular to the optical axis Z, wherein the maximum effective radius of the second lens 22 is defined as the maximum turning boundary point between the second optically effective area 22A and the second optically ineffective area 22B.

[0119] The object side surface 231 of the third lens 23 faces the image side surface 222 of the second lens 22, and the third lens 23 has a third optical effective area 23A and a third optical invalid area 23B. The third optical effective area 23A faces the second optical effective area 22A, and the optical axis Z passes through the third optical effective area 23A. The third optical invalid area 23B surrounds the third optical effective area 23A, and the third optical invalid area 23B abuts against the second optical invalid area 22B, wherein the third lens 23 is located in the third optical effective area. 23A is defined as a third maximum effective diameter, and the third maximum effective diameter is defined as the optical axis Z passes through the third optical effective area 23A of the third lens 23, and the optical axis Z and the object side surface 231 of the third lens 23 form an intersection, and a vertical height from the optical axis Z is defined from the intersection as the starting point to the maximum effective radius, and the third maximum effective diameter is a distance of twice the maximum effective radius perpendicular to the optical axis Z, wherein the maximum effective radius of the third lens 23 is defined as the maximum turning boundary point between the third optical effective area 23A and the third optical invalid area 23B.

[0120] The object-side surface 241 of the fourth lens 24 faces the image-side surface 232 of the third lens 23. The fourth lens 24 has a fourth optically effective area 24A and a fourth optically invalid area 24B. The fourth optically effective area 24A faces the third optically effective area 23A, and the optical axis Z passes through the fourth optically effective area 24A. The fourth optically invalid area 24A surrounds the fourth optically effective area 24B, and the fourth optically invalid area 24B faces the third optically invalid area 23B. The fourth maximum effective diameter is defined as follows: the optical axis Z passes through the fourth optical effective area 24A of the fourth lens 24, and the optical axis Z and the object-side surface 241 of the fourth lens 24 form an intersection, and a vertical height from the optical axis Z is defined from the intersection as the starting point to the maximum effective radius, and the fourth maximum effective diameter is a distance of twice the maximum effective radius perpendicular to the optical axis Z, wherein the maximum effective radius of the fourth lens 24 is defined as the maximum turning boundary point between the fourth optical effective area 24A and the fourth optical invalid area 24B.

[0121] The plurality of light-transmitting elements 30 are respectively made of opaque materials, and the plurality of light-transmitting elements 30 are installed in the lens barrel 11 of the first lens positioning unit 10, wherein the opaque material of the plurality of light-transmitting elements 30 includes one of metal, plastic, carbon, PET and polyimide (PI), such as Figure 1 As shown, in the first embodiment, the plurality of light-transmitting elements 30 include a first light-transmitting element 31, a second light-transmitting element 32 and a third light-transmitting element 33. The first light-transmitting element 31 is disposed on the object-side surface 211 of the first lens 21 and is fixed between the first lens 21 and the light-shielding ring 111 of the lens barrel 11. The second light-transmitting element 32 is disposed between the image-side surface 212 of the first lens 21 and the object-side surface 221 of the second lens 22. The third light-transmitting element 33 is disposed between the image-side surface 232 of the third lens 23 and the object-side surface 241 of the fourth lens 24.

[0122] More specifically, the first light-transmitting element 31 surrounds the optical axis Z and contacts the first optically invalid area 21B of the first lens 21 accordingly. The first light-transmitting element 31 has a first light-transmitting hole 311. The first light-transmitting hole 311 is connected to the object-side opening 112 of the lens barrel 11 and faces the first optically effective area 21A of the first lens 21 for the optical axis Z to pass through. The aperture of the first light-transmitting hole 311 is smaller than or equal to the first maximum effective diameter of the first lens 21, and the aperture of the first light-transmitting hole 311 is smaller than or equal to the minimum inner diameter of the object-side opening 112 of the lens barrel 11. Figure 2 As shown, in the first embodiment, the aperture of the first light-transmitting hole 311 , the first maximum effective diameter of the first lens 21 , and the minimum inner diameter of the object-side port 112 of the lens barrel 11 are equal to each other.

[0123] The second optically invalid area 22B of the second lens 22, the second light-transmitting element 32 has a second light-transmitting hole 321, the second light-transmitting hole 321 faces the second optically effective area 22A of the second lens 22 for the optical axis Z to pass through, wherein the aperture of the second light-transmitting hole 321 is smaller than the second maximum effective diameter of the second lens 22; the third light-transmitting element 33 surrounds the optical axis Z and contacts the third optically invalid area 23B of the third lens 23 and the fourth optically invalid area 24B of the fourth lens 24 respectively, the third light-transmitting element 33 has a third light-transmitting hole 331, the third light-transmitting hole 331 faces the fourth optically effective area 24A of the fourth lens 24 for the optical axis Z to pass through, wherein the aperture of the third light-transmitting hole 331 is equal to the fourth maximum effective diameter of the fourth lens 24.

[0124] In addition, the optical imaging lens 100 further includes an image sensing module 40, which is installed in the lens holder 12 of the first lens positioning unit 10 and is located correspondingly at the position of the imaging surface, wherein the imaging light can pass through the imaging lens group 20 according to the optical axis Z and project onto the image sensing module 40. When the image sensing module 40 detects the light and converts it into an electrical signal, the image sensing module 40 transmits the electrical signal to other external components for subsequent processing.

[0125] In addition, the plurality of light-transmitting elements 30 all satisfy the following condition: 0 μm<TILE≤50 μm, wherein TILE is the inner peripheral thickness of each light-transmitting element 30 at each light-transmitting hole. In a preferred embodiment, the plurality of light-transmitting elements 30 all satisfy the following condition: 0.1 μm<TILE≤10 μm. In addition, the inner edge shapes of the first light-transmitting hole 311 of the first light-transmitting element 31, the second light-transmitting hole 321 of the second light-transmitting element 32, and the third light-transmitting hole 331 of the third light-transmitting element 33 can be adjusted according to needs. In the first embodiment, the first light-transmitting element 31 is used as an example. Figure 3 As shown, the inner edge of the first light-transmitting hole 311 of the first light-transmitting element 31 is rectangular, wherein the upper and lower sides of the first light-transmitting element 31 have a top side surface 312 and a bottom side surface 313, and the TILE condition of the first light-transmitting element 31 is defined as the distance between the top side surface 312 and the bottom side surface 313.

[0126] See also Figure 4A and Figure 4BIn the first preferred embodiment, the inner edge of the first light-transmitting hole 311 can be replaced with a trapezoidal shape, wherein the first light-transmitting element 31 has an inner ring segment 31A and an outer ring segment 31B, the inner ring segment 31A surrounds the first light-transmitting hole 311, and the outer ring segment 31B surrounds the periphery of the inner ring segment 31A. At this time, the TILE condition definition of the first light-transmitting element 31 corresponds to the minimum thickness of the inner ring segment 31A; please refer to Figure 4A , Figure 4B , the inner ring segment 31A of the first light-transmitting element 31 has an inner inclined portion 314 and a straight portion 315, the inner inclined portion 314 is inclined downward from the top side surface 312 of the outer ring segment 31B toward the first light-transmitting hole 311, and the straight portion 315 is correspondingly extended along the optical axis Z and connects the inner inclined portion 314 and the bottom side surface 313, so that the inner ring segment 31A presents a trapezoidal shape, wherein the TILE of the first light-transmitting element 31 is defined as corresponding to the thickness of the straight portion 315, and the first light-transmitting element 31 is defined with a horizontal reference plane L corresponding to the first light-transmitting hole 311 through the inner ring segment 31A and the outer ring segment 31B and perpendicular to the optical axis Z, and the first light-transmitting element 31 satisfies the following conditions: 10°≤ALE≤90°, wherein ALE is the inclination angle of the inner inclined portion 314 relative to the horizontal reference plane L, such as Figure 4A (a) the ALE in the inner ring segment 31A of the first light-transmitting element 31 is 80°, (b) the ALE in the inner ring segment 31A of the first light-transmitting element 31 is 70°, (c) the ALE in the inner ring segment 31A of the first light-transmitting element 31 is 60°, (d) the ALE in the inner ring segment 31A of the first light-transmitting element 31 is 50°; Figure 4B Among them, (e) the ALE in the inner ring segment 31A of the first light-passing element 31 is 40°, (f) the ALE in the inner ring segment 31A of the first light-passing element 31 is 30°, (g) the ALE in the inner ring segment 31A of the first light-passing element 31 is 20°, and (h) the ALE in the inner ring segment 31A of the first light-passing element 31 is 10°.

[0127] Also, see Figure 5A and Figure 5B In the trapezoidal shape of the first embodiment, under the condition that the inner inclined portion 31A of the first light transmitting element 31 and the horizontal reference plane L have the same inclination angle, the thickness of the straight portion 315 of the first light transmitting element 31 can be relatively adjusted, such as Figure 5A As shown, the inner ring segment 31A of the first light-transmitting element 31 is in an angular shape, wherein Figure 5A(a) the TILE in the inner ring segment 31A of the first light-transmitting element 31 is 0.1 μm, (b) the TILE in the inner ring segment 31A of the first light-transmitting element 31 is 0.5 μm, (c) the TILE in the inner ring segment 31A of the first light-transmitting element 31 is 1.0 μm; Figure 5B As shown, the inner ring section 31A of the first light-transmitting element 31 is adjusted to a trapezoidal shape, wherein Figure 5B Among them, (d) the TILE in the inner ring segment 31A of the first light-transmitting element 31 is 2.0μm, (e) the TILE in the inner ring segment 31A of the first light-transmitting element 31 is 5.0μm, (f) the TILE in the inner ring segment 31A of the first light-transmitting element 31 is 10.0μm, (g) the TILE in the inner ring segment 31A of the first light-transmitting element 31 is 50.0μm, thereby the first light-transmitting element 31 satisfies the following conditions: 0μm<TILE≤50μm, and the first light-transmitting element 31 also satisfies the following conditions: 0.008mm≤TOLE≤0.2mm, wherein TOLE is the maximum outer peripheral thickness of the first light-transmitting element 31 corresponding to the outer ring segment 31B, that is, the distance between the top side 312 and the bottom side 313 of the outer ring segment 31B.

[0128] Also, see Fig. 6A and Figure 6B In the first preferred embodiment, the inner inclined portion 314 of the inner ring segment 31A of the first light-transmitting element 31 can be adjusted to be inclined upward from the bottom side 313 of the outer ring segment 31B toward the first light-transmitting hole 311, and the straight portion 315 is adjusted to extend along the optical axis Z and connect the inner inclined portion 314 and the top side 312, and the first light-transmitting element 31 satisfies the following conditions: 10°≤ALE≤90°, such as Fig. 6A Among them, (a) the ALE in the inner ring segment 31A of the first light-transmitting element 31 is 80°, (b) the ALE in the inner ring segment 31A of the first light-transmitting element 31 is 70°, (c) the ALE in the inner ring segment 31A of the first light-transmitting element 31 is 60°, (d) the ALE in the inner ring segment 31A of the first light-transmitting element 31 is 50°; Figure 6B Among them, (e) the ALE in the inner ring segment 31A of the first light-passing element 31 is 45°, (f) the ALE in the inner ring segment 31A of the first light-passing element 31 is 40°, (g) the ALE in the inner ring segment 31A of the first light-passing element 31 is 30°, (h) the ALE in the inner ring segment 31A of the first light-passing element 31 is 20°, and (i) the ALE in the inner ring segment 31A of the first light-passing element 31 is 10°.

[0129] Also, see Fig. 7A and Figure 7BIn the trapezoidal shape of the first embodiment, under the condition that the inner ring segment 31A of the first light transmitting element 31 and the horizontal reference plane L have the same inclination angle, the thickness of the straight portion 315 of the first light transmitting element 31 can also be relatively adjusted, wherein the first light transmitting element 31 satisfies the following conditions: 0μm<TILE≤50μm, and the first light transmitting element 31 also satisfies the following conditions: 0.008mm≤TOLE≤0.2mm, wherein TOLE is the maximum outer peripheral thickness of the first light transmitting element 31 corresponding to the outer ring segment 31B.

[0130] Also, see Figure 8 In the first preferred embodiment, the inner edge of the first light-through hole 311 can be replaced with a conical shape, wherein the inner ring segment 31A of the first light-through element 31 has a first inner inclined portion 316 and a second inner inclined portion 317, and the first inner inclined portion 316 and the second inner inclined portion 317 extend relatively obliquely, wherein the first inner inclined portion 316 is inclined downward from the top side surface 312 of the outer ring segment 31B toward the first light-through hole 311, and the second inner inclined portion 317 is inclined upward from the bottom side surface 313 of the outer ring segment 31B toward the first light-through hole 311, and the straight portion 315 extends along the optical axis Z and connects the first inner inclined portion 316 and the second inner inclined portion 317, so that the inner ring segment 31A presents a conical shape, wherein the first light-through element 3 1, TILE is defined as the thickness of the straight portion 315, the first light transmitting element 31 is defined as a horizontal reference plane L' corresponding to the first light transmitting hole 311 passing through the inner ring segment 31A and the outer ring segment 31B and perpendicular to the optical axis Z, the first light transmitting element 31 satisfies the following conditions: 10°≤OALE≤90°; 10°≤IALE≤90°, wherein OALE is the inclination angle of the first inner inclined portion 316 relative to the horizontal reference plane L', IALE is the inclination angle of the second inner inclined portion 317 relative to the horizontal reference plane L', and the first light transmitting element 31 further satisfies the following conditions: 0.1μm<TILE≤10μm, 0.008mm≤TOLE≤0.2mm.

[0131] Specifically, if Figure 8 (a) the OALE of the inner ring section 31A of the first light-transmitting element 31 is 45°, and the IALE of the inner ring section 31A of the first light-transmitting element 31 is 60°; (b) the OALE of the inner ring section 31A of the first light-transmitting element 31 is 45°, and the IALE of the inner ring section 31A of the first light-transmitting element 31 is 10°, but the present invention is not limited thereto. The OALE condition, IALE condition and TILE condition of the inner ring section 31A of the first light-transmitting element 31 can be adjusted according to the requirements. For example, please refer to Figures 9A to 9C , Fig. 9AAmong them, (a) to (c), the TILE of the first light-transmitting element 31 is 1.0 μm, wherein (a) the OALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, and the IALE of the inner ring segment 31A of the first light-transmitting element 31 is 60°, (b) the OALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, and the IALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, (c) the OALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, and the IALE of the inner ring segment 31A of the first light-transmitting element 31 is 30°; Fig. 9B Among them, (d) to (f), the TILE of the first light-transmitting element 31 is 3.0 μm, wherein (d) the OALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, and the IALE of the inner ring segment 31A of the first light-transmitting element 31 is 60°, (e) the OALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, and the IALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, (f) the OALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, and the IALE of the inner ring segment 31A of the first light-transmitting element 31 is 30°; Fig. 9C Among them, (g) to (i) the TILE of the first light-transmitting element 31 is 5.0 μm, wherein (g) the OALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, and the IALE of the inner ring segment 31A of the first light-transmitting element 31 is 60°, (h) the OALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, and the IALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, (i) the OALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, and the IALE of the inner ring segment 31A of the first light-transmitting element 31 is 30°.

[0132] Also, see Figures 10A to 10C , Fig. 10A Among them, (a) to (c), the TILE in the inner ring segment 31A of the first light-transmitting element 31 is 1.0 μm, wherein (a) the OALE in the inner ring segment 31A of the first light-transmitting element 31 is 60°, and the IALE in the inner ring segment 31A of the first light-transmitting element 31 is 60°, (b) the OALE in the inner ring segment 31A of the first light-transmitting element 31 is 60°, and the IALE in the inner ring segment 31A of the first light-transmitting element 31 is 45°, (c) the OALE in the inner ring segment 31A of the first light-transmitting element 31 is 60°, and the IALE in the inner ring segment 31A of the first light-transmitting element 31 is 30°; Fig. 10BAmong them, (d) to (f), the TILE in the inner ring segment 31A of the first light-transmitting element 31 is 3.0 μm, wherein (d) the OALE in the inner ring segment 31A of the first light-transmitting element 31 is 60°, and the IALE in the inner ring segment 31A of the first light-transmitting element 31 is 60°, (e) the OALE in the inner ring segment 31A of the first light-transmitting element 31 is 60°, and the IALE in the inner ring segment 31A of the first light-transmitting element 31 is 45°, (f) the OALE in the inner ring segment 31A of the first light-transmitting element 31 is 60°, and the IALE in the inner ring segment 31A of the first light-transmitting element 31 is 30°; Fig. 10C Among them, (g) to (i) the TILE of the first light-transmitting element 31 is 5.0 μm, wherein (g) the OALE of the inner ring segment 31A of the first light-transmitting element 31 is 60°, and the IALE of the inner ring segment 31A of the first light-transmitting element 31 is 60°, (h) the OALE of the first light-transmitting element 31 is 60°, and the IALE of the inner ring segment 31A of the first light-transmitting element 31 is 45°, (i) the OALE of the inner ring segment 31A of the first light-transmitting element 31 is 60°, and the IALE of the first light-transmitting element 31 is 30°.

[0133] In summary, the various shapes and conditions of the first light transmitting element 31 in the first embodiment are designed based on the condition that the aperture of the first light transmitting hole 311 is less than or equal to the first maximum effective diameter of the first lens 21, so as to provide the purpose of blocking non-imaging light from passing through the first lens 21. Similarly, the shapes and sizes of the second light transmitting element 32 and the third light transmitting element 33 can also be adjusted according to needs. Therefore, the optical imaging lens 100 can effectively block non-imaging light from entering the imaging lens group 20 through the design of the plurality of light transmitting elements 30. In addition to reducing the interference of the non-imaging light on the optical imaging lens 100 to improve the imaging quality, the TILE condition and the TOLE condition are designed among the plurality of light transmitting elements 30, so as to further reduce the size of each light transmitting element 30, thereby achieving the effect of miniaturization of the optical imaging lens 100 and improving the optical imaging quality.

[0134] Also, see Fig.11 , Fig.12 , which is an optical imaging lens 200 provided in the second preferred embodiment of the present invention, comprises the aforementioned first lens positioning unit 10, the aforementioned imaging lens group 20, the aforementioned plurality of light-transmitting elements 30 and the aforementioned image sensing module 40, wherein the structures and position settings of the first lens positioning unit 10, the imaging lens group 20, the plurality of light-transmitting elements 30 and the image sensing module 40 in the second preferred embodiment are the same as those of the aforementioned first embodiment.

[0135] In the second preferred embodiment, the imaging lens group 20 includes the first lens 21, the second lens 22, the third lens 23, and the fourth lens 24 from the object side to the image side along an optical axis Z from the object side port 112. The plurality of light-transmitting elements 30 include the first light-transmitting element 31, the second light-transmitting element 32, and the third light-transmitting element 33. The first light-transmitting element 31 is disposed on the object side surface 211 of the first lens 21 and is fixed between the first lens 21 and the light-shielding ring 111 of the lens barrel 11. The second light-transmitting element 32 is disposed between the image side surface 212 of the first lens 21 and the object side surface 221 of the second lens 22. The third light-transmitting element 33 is disposed between the image side surface 232 of the third lens 23 and the object side surface 241 of the fourth lens 24.

[0136] In particular, if Fig.12 As shown, in the second preferred embodiment, the lens barrel 11 enlarges the inner diameter of the object side port 112, so that the aperture of the first light-transmitting hole 311 of the first light-transmitting element 31 is smaller than the minimum inner diameter of the object side port 112, and the aperture of the first light-transmitting hole 311 is equal to the first maximum effective diameter of the first lens 21, wherein the TOLE condition in the first light-transmitting element 31 can be adjusted according to the requirements, for example, FIG. 13A to FIG. 13D As shown, Fig.13A The TOLE of the first light transmitting element 31 is 0.008 mm. Fig. 13B The TOLE of the first light transmitting element 31 is 0.016 mm. Fig. 13C The TOLE of the first light transmitting element 31 is 0.05 mm. Fig.13D The TOLE of the first light transmitting element 31 is 0.1 mm, so that the first light transmitting element 31 satisfies the following condition: 0.008 mm≤TOLE≤0.2 mm.

[0137] In addition, the multiple light-transmitting elements 31 all satisfy the following conditions: 0μm≤CONP≤50μm, 0μm≤CONE≤50μm and 0μm≤CON≤50μm, wherein each of the light-transmitting holes has a light-transmitting center axis CLE, CONP is the distance between the light-transmitting center axis CLE at each of the light-transmitting holes and the optical axis Z in the direction perpendicular to the optical axis; the object side port 112 has an opening center axis CPE, CONE is the distance between the opening center axis CPE at the object side port 112 and the optical axis Z in the direction perpendicular to the optical axis; CON is the maximum distance between the light-transmitting center axis CLE and the opening center axis CPE between the light-transmitting hole and the object side port 112 in the direction perpendicular to the optical axis Z.

[0138] For example, see Fig.14A and Fig. 14B , Fig.14A The light-through center axis CLE of the first light-through hole 311 of the first light-through element 31 is located on one side of the optical axis Z, and the opening center axis CPE of the object side port 112 of the lens barrel 11 is located on the other side of the optical axis Z, whereby the CONP condition represents the offset between the light-through center axis CLE of the first light-through hole 311 and the optical axis Z, the CONE condition represents the offset between the opening center axis CPE of the object side port 112 and the optical axis Z, and the CON represents the offset between the opening center axis CPE of the object side port 112 and the light-through center axis CLE of the first light-through hole 311; and Fig. 14B It is shown that the light-transmitting central axis CLE of the first light-transmitting hole 311 of the first light-transmitting element 31 and the opening central axis CPE of the object-side opening 112 of the lens barrel 11 overlap with the optical axis Z, indicating that the first light-transmitting hole 311 of the first light-transmitting element 31 and the object-side opening 112 of the lens barrel 11 are concentrically designed.

[0139] Therefore, the design of the first light-transmitting element 31 in the second embodiment is also based on the condition that the aperture of the first light-transmitting hole 311 is smaller than or equal to the first maximum effective diameter of the first lens 21 , so as to provide the purpose of blocking non-imaging light from passing through the first lens 21 .

[0140] Also, see Fig.15 , Fig.16 , which is an optical imaging lens 300 provided in the third preferred embodiment of the present invention, comprises a first lens positioning unit 10', the aforementioned imaging lens group 20, a plurality of light-transmitting elements 30' and the aforementioned image sensing module 40, wherein the imaging lens group 20 and the image sensing module 40 of the third preferred embodiment are respectively the same as those of the aforementioned first embodiment.

[0141] The first lens positioning unit 10' is hollow inside and is made of an opaque material. In the present embodiment, the first lens positioning unit 10' comprises a lens barrel 11' and a lens seat 12'. A light-shielding ring 111' is radially retracted at one end of the lens barrel 11'. An object-side port 112' is formed around the inner edge of the light-shielding ring 111'. The object-side port 112' is communicated with the interior of the lens barrel 11', and an external thread 113' is provided at the other end of the lens barrel 11'. A connecting portion 121' is extended upward from the lens seat 12'. The connecting portion 121' has an internal thread 122' which is correspondingly combined with the external thread 113' of the lens barrel 11', whereby the lens barrel 11' and the lens seat 12' are screwed together in a detachable manner.

[0142] The imaging lens group 20 includes the first lens 21, the second lens 22, the third lens 23 and the fourth lens 24 from the object side to the image side along an optical axis Z from the object side to the image side. In the third embodiment, the structures of the first lens 21, the second lens 22, the third lens 23 and the fourth lens 24 are the same as those of the first embodiment.

[0143] The plurality of light-transmitting elements 30' include a first light-transmitting element 31', a second light-transmitting element 32', a third light-transmitting element 33' and a fourth light-transmitting element 34'. The first light-transmitting element 31' is disposed on the object-side surface 211 of the first lens 21 and is fixed between the first lens 21 and the light-shielding ring 111' of the lens barrel 11'. Fig.16 As shown, the first light-transmitting element 31' has a first light-transmitting hole 311', the first light-transmitting hole 311' is connected to the object-side opening 112' of the lens barrel 11' and allows the optical axis Z to pass through, wherein the aperture of the first light-transmitting hole 311' is equal to the first maximum effective diameter of the first lens 21, and the aperture of the first light-transmitting hole 311' is smaller than the minimum inner diameter of the object-side opening 112' of the lens barrel 11'; please refer to Fig.15 The second light-transmitting element 32' is disposed between the image-side surface 212 of the first lens 21 and the object-side surface 221 of the second lens 22, wherein the second light-transmitting element 32' has a second light-transmitting hole 321', the second light-transmitting hole 321' is for the optical axis Z to pass through, and the aperture of the second light-transmitting hole 321' is smaller than the second maximum effective diameter of the second lens 21; the third light-transmitting element 33' is disposed between the image-side surface 222 of the second lens 22 and the object-side surface 231 of the third lens 23, wherein the third light-transmitting element 33' has a a third light-through hole 331', wherein the third light-through hole 331' is for the optical axis to pass through, and the aperture of the third light-through hole 331' is equal to the third maximum effective diameter of the third lens 23; the fourth light-through element 34' is disposed between the image-side surface 232 of the third lens 23 and the object-side surface 241 of the fourth lens 24, wherein the fourth light-through element 34' has a fourth light-through hole 341', wherein the fourth light-through hole 341' is for the optical axis Z to pass through, and the aperture of the fourth light-through hole 341' is smaller than the fourth maximum effective diameter of the fourth lens 34.

[0144] Therefore, the design of the plurality of light-transmitting elements 30' in the third embodiment is also based on the condition that the aperture of each light-transmitting hole is smaller than or equal to the maximum effective diameter of each lens, so as to provide the purpose of shielding non-imaging light from passing through each lens.

[0145] Also, see Fig.17 , Fig.18, which is an optical imaging lens 400 provided in the fourth preferred embodiment of the present invention, comprises a first lens positioning unit 50, the imaging lens group 20, the plurality of light-transmitting elements 30 and the image sensing module 40. The structures of the imaging lens group 20, the plurality of light-transmitting elements 30 and the image sensing module 40 in the fourth preferred embodiment are respectively the same as those in the first preferred embodiment, and are not described in detail herein.

[0146] In particular, in the fourth preferred embodiment, the first lens positioning unit 50 is hollow inside and is made of opaque material. In this embodiment, the first lens positioning unit 50 includes an integral lens barrel 51 and a lens seat 52. One end of the lens barrel 51 is radially inwardly retracted to have a light-shielding ring 511, and the inner edge of the light-shielding ring 511 is surrounded to form an object side port 512, and the object side port 512 is connected to the interior of the lens barrel 51, and the other end of the lens barrel 51 extends radially outward to have a shoulder 513, and the lens seat 52 is combined on the shoulder 513 of the lens barrel 51; based on this, the first lens positioning unit 50 is designed through the shoulder 513 of the lens barrel 51 to expand the internal space of the lens seat 52.

[0147] Also, see Fig.18 , which is an optical imaging lens 500 provided in the fifth preferred embodiment of the present invention, comprises a first lens positioning unit 60 , an imaging lens group 70 , a plurality of light-transmitting elements 80 and a second lens positioning unit 90 .

[0148] The first lens positioning unit 60 is hollow inside and is made of opaque material. In the present embodiment, the first lens positioning unit 60 includes an integral lens barrel 61 and a lens seat 62. One end of the lens barrel 61 is radially inwardly contracted to have a light-shielding ring 611. The inner edge of the light-shielding ring 611 surrounds and forms an object-side opening 612. The object-side opening 612 is connected to the inside of the lens barrel 61. The lens seat 12 is opposite to the object-side opening 612 which is combined with the other end of the lens barrel 61.

[0149] The imaging lens group 70 is installed in the lens barrel 61 of the first lens positioning unit 60; the imaging lens group 70 includes a first lens 71, a second lens 72, a third lens 73, a fourth lens 74, a fifth lens 75, a sixth lens 76 and an imaging surface from the object side port 612 along an optical axis Z from an object side to an image side, the first lens 71, the second lens 72, the third lens 73, the fourth lens 74, the fifth lens 75 and the sixth lens 76 respectively having refractive power and arranged in sequence inside the lens barrel 61, wherein the first lens 7 1 is located inside the light-shielding ring 611, and the object-side surface 711 of the first lens 71 is exposed at the object-side opening 612 of the lens barrel 61, wherein the first lens 71 has a first optically effective area 71A and a first optically invalid area 71B, the first optically effective area 71A is correspondingly exposed at the object-side opening 612 of the lens barrel 61, and the optical axis Z passes through the first optically effective area 71A, the first optically invalid area 71B surrounds the first optically effective area 71A, and the light-shielding ring 611 correspondingly blocks the first optically invalid area 71B of the first lens 71.

[0150] In addition, the first lens 71 defines a first maximum effective diameter in the first optically effective area 71A, wherein the definition of the first maximum effective diameter is the same as that of the first embodiment, that is, the optical axis Z passes through the first optically effective area 71A of the first lens 71, and the optical axis Z and the object-side surface 711 of the first lens 71 form an intersection, and a vertical height from the optical axis Z is defined from the intersection as a starting point to the maximum effective radius, and the first maximum effective diameter is a distance of twice the maximum effective radius perpendicular to the optical axis Z, wherein the maximum effective radius of the first lens 71 is defined as the maximum turning boundary point between the first optically effective area 71A and the first optically invalid area 71B.

[0151] The object-side surface 721 of the second lens 72 faces the image-side surface 712 of the first lens 71. The second lens 72 has a second optically effective area 72A and a second optically invalid area 72B. The second optically effective area 72A faces the first optically effective area 71A, and the optical axis Z passes through the second optically effective area 72A. The second optically invalid area 72B surrounds the second optically effective area 72A, and the second optically invalid area 72B faces the first optically invalid area 71B accordingly. The second lens 72 defines a second maximum effective diameter in the second optically effective area 72A. In the present embodiment, the second maximum effective diameter is defined in the same manner as the first maximum effective diameter.

[0152] The object-side surface 731 of the third lens 73 faces the image-side surface 722 of the second lens 72. The third lens 73 has a third optically effective area 73A and a third optically invalid area 73B. The third optically effective area 73A faces the second optically effective area 72A, and the optical axis Z passes through the third optically effective area 73A. The third optically invalid area 73B surrounds the third optically effective area 73A, and the third optically invalid area 73B faces the second optically invalid area 72B. The third lens 73 defines a third maximum effective diameter in the third optically effective area 73A. In the present embodiment, the third maximum effective diameter is defined in the same manner as the first maximum effective diameter.

[0153] The object-side surface 741 of the fourth lens 74 faces the image-side surface 732 of the third lens 73. The fourth lens 74 has a fourth optically effective area 74A and a fourth optically invalid area 74B. The fourth optically effective area 74A faces the third optically effective area 73A, and the optical axis Z passes through the fourth optically effective area 74A. The fourth optically invalid area 74B surrounds the fourth optically effective area 74A, and the fourth optically invalid area 74B faces the third optically invalid area 73B. The fourth lens 74 defines a fourth maximum effective diameter in the fourth optically effective area 74A. In the present embodiment, the fourth maximum effective diameter is defined in the same manner as the first maximum effective diameter.

[0154] The object-side surface 751 of the fifth lens 75 faces the image-side surface 742 of the fourth lens 74. The fifth lens 75 has a fifth optically effective area 75A and a fifth optically invalid area 75B. The fifth optically effective area 75A faces the fourth optically effective area 74A, and the optical axis Z passes through the fifth optically effective area 75A. The fifth optically invalid area 75B surrounds the fifth optically effective area 75A, and the fifth optically invalid area 75B faces the fourth optically invalid area 74B. The fifth lens 75 defines a fifth maximum effective diameter in the fifth optically effective area 75A. In the present embodiment, the fifth maximum effective diameter is defined in the same manner as the first maximum effective diameter.

[0155] The object-side surface 761 of the sixth lens 76 faces the image-side surface 752 of the fifth lens 75. The sixth lens 76 has a sixth optically effective area 76A and a sixth optically invalid area 76B. The sixth optically effective area 76A faces the fifth optically effective area 75A, and the optical axis Z passes through the sixth optically effective area 76A. The sixth optically invalid area 76B surrounds the sixth optically effective area 76A, and the sixth optically invalid area 76B faces the fifth optically invalid area 75B. The sixth lens 76 defines a sixth maximum effective diameter in the sixth optically effective area 76A. In the present embodiment, the sixth maximum effective diameter is defined in the same manner as the first maximum effective diameter.

[0156] The plurality of light-transmitting elements 80 are respectively made of opaque materials, and the plurality of light-transmitting elements 80 are installed in the lens barrel 61 of the first lens positioning unit 60, wherein the opaque materials of the plurality of light-transmitting elements 80 are respectively made of opaque materials, such as Fig.18 As shown, in the fifth embodiment, the plurality of light-transmitting elements 80 include a first light-transmitting element 81, a second light-transmitting element 82, a third light-transmitting element 83, a fourth light-transmitting element 84 and a fifth light-transmitting element 85, wherein the first light-transmitting element 81 is disposed on the object-side surface 711 of the first lens 71 and is fixed between the first lens 71 and the light-shielding ring 611. In the present embodiment, the first light-transmitting element 81 surrounds the optical axis Z and correspondingly contacts the first optically invalid region 71B of the first lens 71. The first light-transmitting element 71 has a first light-transmitting hole 711, which is connected to the object-side port 612 of the lens barrel 61 and allows the optical axis Z to pass through. The aperture of the first light-transmitting hole 811 is smaller than or equal to the first maximum effective diameter of the first lens 71, and the aperture of the first light-transmitting hole 811 is smaller than the minimum inner diameter of the object-side port 612 of the lens barrel 61.

[0157] Please see again Fig.18The second light-transmitting element 82 is disposed between the image-side surface 712 of the first lens 71 and the object-side surface 721 of the second lens 72. In this embodiment, the second light-transmitting element 82 surrounds the optical axis Z and contacts the first optically invalid area 71B of the first lens 71 and the second optically invalid area 72B of the second lens 72 respectively. The second light-transmitting element 82 has a second light-transmitting hole 821 for the optical axis Z to pass through. The aperture of the second light-transmitting hole 821 is smaller than the second maximum effective diameter of the second lens 72. The third light-transmitting element 83 is disposed between the image-side surface 722 of the second lens 72 and the object-side surface 731 of the third lens 73. In the present embodiment, the third light-transmitting element 83 surrounds the optical axis Z and contacts the second optically invalid area 72B of the second lens 72 and the third optically invalid area 73B of the third lens 73 respectively. The third light-transmitting element 83 has a third light-transmitting hole 831 for the optical axis Z to pass through. The aperture of the third light-transmitting hole 831 is equal to the third maximum effective diameter of the third lens 73. The fourth light-transmitting element 84 is disposed between the image-side surface 732 of the third lens 73 and the object-side surface 741 of the fourth lens 74. In the present embodiment, the fourth light-transmitting element 84 surrounds the optical axis Z and contacts the third optical invalid area 73B of the third lens 73 and the fourth optical invalid area 74B of the fourth lens 74 respectively. The fourth light-transmitting element 84 has a fourth light-transmitting hole 841 for the optical axis Z to pass through. The aperture of the fourth light-transmitting hole 841 is smaller than the fourth maximum effective diameter of the fourth lens 74. The fifth light-transmitting element 85 is disposed between the image-side surface 742 of the fourth lens 74 and the object-side surface 751 of the fifth lens 75. In the present embodiment, the fifth light-transmitting element 85 surrounds the optical axis Z and contacts the fourth optically invalid area 74B of the fourth lens 74 and the fifth optically invalid area 75B of the fifth lens 75 respectively. The fifth light-transmitting element 85 has a fifth light-transmitting hole 851 for the optical axis Z to pass through. The aperture of the fifth light-transmitting hole 851 is smaller than the fifth maximum effective diameter of the fifth lens 75.

[0158] In addition, the plurality of light-transmitting elements 80 all satisfy the following conditions: 0 μm<TILE≤50 μm, 0 μm≤CONP≤50 μm, 0 μm≤CONE≤50 μm and 0 μm≤CON≤50 μm, and the shapes and sizes of the plurality of light-transmitting elements 80 can be adjusted according to requirements.

[0159] The second lens positioning unit 90 is made of a light-proof material and is installed in the lens barrel 61 of the first lens positioning unit 60 to position each lens in the imaging lens group 70. Fig.18 As shown, in the present embodiment, the second lens positioning unit 90 is installed between the image side surface 752 of the fifth lens 75 and the object side surface 761 of the sixth lens 76, wherein the second lens positioning unit 90 has a circular ring portion 91 and a butt portion 92, the circular ring portion 91 contacts the fifth optical invalid area 75B of the fifth lens 75 and the sixth optical invalid area 76B of the sixth lens 76, the butt portion 92 surrounds the outer circumference of the circular ring portion 91 and butts against the inner wall of the lens barrel 61, and the second lens positioning unit 90 butts against the inner wall of the lens barrel 61 through the butt portion 92, so that the second lens positioning unit 90 is positioned in the lens barrel 61 and provides the function of fixing the imaging lens group 70.

[0160] In other embodiments, the installation position of the second lens positioning unit 90 can be adjusted as needed. For example, the second lens positioning unit 90 can be adjusted to be installed between the first lens 71 and the second lens 72 so that the annular portion 91 of the second lens positioning unit 90 contacts between the first lens 71 and the second lens 72, or the second lens positioning unit 90 is installed on the first light-transmitting element 81 so that the annular portion 91 of the second lens positioning unit 90 contacts the first lens 71 or the second lens 72. In other words, the second lens positioning unit 90 can also be adjusted to be installed between the second lens 72 and the third lens 73, or between the third lens 73 and the fourth lens 74.

[0161] In summary, the optical imaging lens 100, 200, 300, 400, 500 can effectively block the non-imaging light from entering the imaging lens group 20, 70 through the design of the plurality of light-transmitting elements 30, 30', 80. In addition to reducing the interference of the non-imaging light on the optical imaging lens 100, 200, 300, 400, 500 to improve the imaging quality, the plurality of light-transmitting elements 30, 30', 80 meet the TILE condition and the TOLE condition, and further reduce the number of light-transmitting elements 30, 30', 80. , 30', 80, so as to achieve the effect of miniaturization of the optical imaging lens 100, 200, 300, 400, 500 and improving the optical imaging quality; in addition, the inner edge shapes of the light holes of the multiple light-transmitting elements 30, 30', 80 can be adjusted according to needs. As long as the apertures of the light holes of the multiple light-transmitting elements 30, 30', 80 are less than or equal to the maximum effective diameter of each of the lenses, it is basically able to effectively provide the purpose of shielding non-imaging light from passing through each of the lenses, and further provide the effect of regulating the amount of imaging light entering through each of the lenses.

[0162] It should be specially noted that in other embodiments, the optical imaging lens can be adjusted in quantity and structure according to actual needs. For example, the number of lenses of the imaging lens group can be selected to be at least one lens, or basically have a first lens and a second lens; the number of the light-transmitting elements can also be selected to be at least one, and the light-transmitting element is disposed on one of the object side and the image side of the lens, or the light-transmitting element is disposed between the first lens and the second lens, which can also achieve the purpose of blocking non-imaging light from passing through the lens; the image sensing module and the second lens positioning unit can be omitted.

[0163] Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. An optical imaging lens, comprising: A first lens positioning unit, which is hollow inside and made of opaque material, and has an object side opening at one end thereof communicating with the inside; An imaging lens group is installed in the first lens positioning unit; the imaging lens group includes at least one lens and an imaging surface from the object side port along an optical axis from an object side to an image side, the lens has a refractive power, and the lens has an optically effective area and an optically invalid area, and the optically invalid area surrounds the optically effective area; wherein, The optical axis passes through the lens from the optical effective area, and the lens defines a maximum effective diameter in the optical effective area, and the imaging surface is located on one side of the lens relative to the object side port; as well as At least one light-transmitting element is made of an opaque material, and is installed in the first lens positioning unit and is disposed on one of the object side and the image side of the lens, and the light-transmitting element is disposed around the optical axis and facing the optically invalid area; in addition, the light-transmitting element has a light-transmitting hole facing the optically effective area of ​​the lens for the optical axis to pass through, and the aperture of the light-transmitting hole is less than or equal to the maximum effective diameter of the lens.

2. The optical imaging lens as claimed in claim 1, wherein the first lens positioning unit comprises a lens barrel and a lens holder integrally formed therein, one end of the lens barrel having the object side port, and the lens holder is located at the other end opposite to the object side port; in addition, the imaging lens group and the at least one light transmitting element are disposed in the lens barrel.

3. The optical imaging lens as claimed in claim 1, wherein the first lens positioning unit comprises a lens barrel and a lens mount, and the lens barrel can be combined with or detached from the lens mount; one end of the lens barrel has the object side port, and the other end of the lens barrel opposite to the object side port is combined with the lens mount; in addition, the imaging lens group and the at least one light-transmitting element are disposed in the lens barrel.

4. The optical imaging lens as described in claim 2 or 3 further comprises a second lens positioning unit, the second lens positioning unit is made of an opaque material and is installed in the lens barrel of the first lens positioning unit, the second lens positioning unit has a circular ring portion and a contact portion, the circular ring portion contacts the lens, and the contact portion surrounds the outer circumference of the circular ring portion and contacts the inner wall of the lens barrel. 5 . The optical imaging lens as claimed in claim 1 , wherein the light-transmitting element satisfies the following condition: 0 μm<TILE≤50 μm, wherein TILE is the inner peripheral thickness of the light-transmitting element at the light-transmitting hole. 6 . The optical imaging lens according to claim 5 , wherein the light transmitting element satisfies the following condition: 0.1 μm<TILE≤10 μm.

7. The optical imaging lens as claimed in claim 5, wherein the light-transmitting element has an inner ring segment and an outer ring segment, the inner ring segment surrounds the light-transmitting hole, the outer ring segment surrounds the periphery of the inner ring segment, and the definition of the TILE corresponds to the minimum thickness of the inner ring segment.

8. The optical imaging lens as claimed in claim 7, wherein the inner ring segment has an inner inclined portion inclined from the outer ring segment toward the light-through hole, and the light-through element defines a horizontal reference plane corresponding to the light-through hole and passing through the inner ring segment and the outer ring segment and perpendicular to the optical axis, and the light-through element satisfies the following condition: 10°≤ALE≤90°, wherein ALE is an inclination angle of the inner inclined portion relative to the horizontal reference plane.

9. The optical imaging lens as claimed in claim 8, wherein the inner ring segment has a straight portion correspondingly extending along the optical axis and connected to the inner inclined portion, and the definition of TILE corresponds to the thickness of the straight portion.

10. The optical imaging lens as claimed in claim 7, wherein the inner ring segment has a first inner inclined portion and a second inner inclined portion, the first inner inclined portion and the second inner inclined portion extend obliquely relative to each other, wherein the first inner inclined portion is inclined from the top surface of the outer ring segment toward the light-through hole, and the second inner inclined portion is inclined from the bottom surface of the outer ring segment toward the light-through hole, and the light-through element defines a horizontal reference plane corresponding to the light-through hole and passing through the inner ring segment and the outer ring segment and perpendicular to the optical axis, and the light-through element satisfies the following conditions: 10°≤OALE≤90°; 10°≤IALE≤90°, wherein OALE is an inclination angle of the first inner inclined portion relative to the horizontal reference plane, and IALE is an inclination angle of the second inner inclined portion relative to the horizontal reference plane.

11. The optical imaging lens as claimed in claim 10, wherein the inner ring segment has a straight portion correspondingly extending along the optical axis and connecting the first inner oblique portion and the second inner oblique portion, and the definition of the TILE corresponds to the thickness of the straight portion. 12 . The optical imaging lens according to claim 7 , wherein the shape of the inner ring segment comprises one of a trapezoid, a cone, an angle, and a polygon.

13. The optical imaging lens according to any one of claims 7 to 11, wherein the light-transmitting element satisfies the following condition: 0.008 mm ≤ TOLE ≤ 0.2 mm, wherein TOLE is the maximum outer peripheral thickness of the light-transmitting element corresponding to the outer ring segment.

14. The optical imaging lens as claimed in claim 2 or 3, wherein the lens barrel has a light-shielding ring surrounding the optical axis and having an inner edge surrounding the object-side opening, and facing the object-side surface of the lens and corresponding to the optically ineffective area; in addition, the light-transmitting element is disposed on the object-side surface of the lens and fixed between the lens and the light-shielding ring. 15 . The optical imaging lens as claimed in claim 14 , wherein the aperture of the light-transmitting hole is smaller than or equal to the inner diameter of the object-side port of the lens barrel.

16. The optical imaging lens as claimed in claim 1, wherein the light-transmitting element satisfies the following condition: 0 μm ≤ CONP ≤ 50 μm, wherein the light-transmitting hole has a light-transmitting central axis, and CONP is a distance between the light-transmitting central axis at the light-transmitting hole and the optical axis in a direction perpendicular to the optical axis.

17. The optical imaging lens as claimed in claim 1, wherein the first lens positioning unit satisfies the following condition: 0 μm≤CONE≤50 μm, wherein the object side port has an opening central axis, and CONE is a distance between the opening central axis at the object side port and the optical axis in a direction perpendicular to the optical axis.

18. The optical imaging lens as claimed in claim 1, wherein the optical imaging lens satisfies the following condition: 0 μm ≤ CON ≤ 50 μm, wherein the light-through hole has a light-through central axis, the object-side port has an opening central axis, and CON is a maximum distance between the light-through central axis and the opening central axis between the light-through hole and the object-side port in a direction perpendicular to the optical axis.

19. The optical imaging lens as claimed in claim 1, wherein the at least one light-transmitting element comprises a first light-transmitting element and a second light-transmitting element, the first light-transmitting element contacts the object-side surface of the lens, and the second light-transmitting element contacts the image-side surface of the lens. 20 . The optical imaging lens as claimed in claim 1 , wherein a material of the light transmitting element comprises one of metal, plastic, carbon, PET and polyimide.

21. The optical imaging lens as claimed in claim 1, further comprising an image sensing module, wherein the image sensing module is installed in the first lens positioning unit and is located correspondingly at a position of the imaging plane.

22. An optical imaging lens, comprising: A first lens positioning unit, which is hollow inside and made of opaque material, and has an object side opening at one end of the first lens positioning unit; an imaging lens group, installed in the first lens positioning unit, the imaging lens group including a first lens, a second lens and an imaging surface from the object side port along an optical axis from an object side to an image side, the first lens and the second lens both have refractive power, wherein the first lens has a first optically effective area and a first optically invalid area, and the first optically invalid area surrounds the first optically effective area; The second lens has a second optically effective area and a second optically invalid area, the second optically effective area faces the first optically effective area, the second optically invalid area surrounds the second optically effective area, and the imaging plane is located on one side of the second lens relative to the object side port and the first lens. in, The optical axis passes through the first lens and the second lens from the first optical effective area and the second optical effective area respectively, and the first lens defines a first maximum effective diameter in the first optical effective area, and the second lens defines a second maximum effective diameter in the second optical effective area; as well as At least one light-transmitting element is made of a light-proof material and is disposed in the first lens positioning unit; the light-transmitting element surrounds the optical axis and is located between the first lens and the second lens, and is disposed on a side of the first optically invalid region of the first lens facing the second optically invalid region of the second lens; in addition, the light-transmitting element has a light-transmitting hole facing the first optically effective region and the second optically effective region for the optical axis to pass through, and the aperture of the light-transmitting hole is less than or equal to the first maximum effective diameter of the first lens and the second maximum effective diameter of the second lens.

23. The optical imaging lens as claimed in claim 22, wherein the first lens positioning unit comprises a lens barrel and a lens holder integrally formed therein, one end of the lens barrel having the object side port, and the lens holder is coupled to the other end of the lens barrel opposite to the object side port; in addition, the imaging lens group and the at least one light transmitting element are disposed in the lens barrel.

24. The optical imaging lens as claimed in claim 22, wherein the first lens positioning unit comprises a lens barrel and a lens mount, and the lens barrel can be combined with or detached from the lens mount; one end of the lens barrel has the object side port, and the lens barrel is combined with the other end of the lens barrel opposite to the object side port; in addition, the imaging lens group and the at least one light-transmitting element are disposed in the lens barrel.

25. The optical imaging lens as described in claim 23 or 24, further comprising a second lens positioning unit, the second lens positioning unit is made of an opaque material and is installed in the lens barrel of the first lens positioning unit, the second lens positioning unit has a circular ring portion and a contact portion, the circular ring portion contacts the first lens or the second lens, and the contact portion surrounds the outer circumference of the circular ring portion and contacts the inner wall of the lens barrel. 26 . The optical imaging lens according to claim 22 , wherein the light-transmitting element satisfies the following condition: 0 μm<TILE≤50 μm, wherein TILE is the inner peripheral thickness of the light-transmitting element corresponding to the light-transmitting hole.

27. The optical imaging lens of claim 26, wherein the light transmitting element satisfies the following condition: 0.1 μm<TILE≤10 μm.

28. The optical imaging lens as claimed in claim 26, wherein the light-transmitting element has an inner ring segment and an outer ring segment, the inner ring segment surrounds the light-transmitting hole, the outer ring segment surrounds the periphery of the inner ring segment, and the definition of TILE corresponds to the minimum thickness of the inner ring segment.

29. The optical imaging lens as claimed in claim 28, wherein the inner ring segment has an inner inclined portion inclined from the outer ring segment toward the light-through hole, and the light-through element defines a horizontal reference plane corresponding to the light-through hole and passing through the inner ring segment and the outer ring segment and perpendicular to the optical axis, and the light-through element satisfies the following condition: 10°≤ALE≤90°, wherein ALE is an inclination angle of the inner inclined portion relative to the horizontal reference plane.

30. The optical imaging lens as claimed in claim 29, wherein the inner ring segment has a straight portion correspondingly extending along the optical axis and connected to the inner inclined portion, and the definition of the TILE corresponds to the thickness of the straight portion.

31. The optical imaging lens of claim 28, wherein the inner ring segment has a first inner inclined portion and a second inner inclined portion, the first inner inclined portion and the second inner inclined portion extend obliquely relative to each other, wherein the first inner inclined portion is inclined from the top surface of the outer ring segment toward the light-through hole, and the second inner inclined portion is inclined from the bottom surface of the outer ring segment toward the light-through hole, and the light-through element defines a horizontal reference plane corresponding to the light-through hole and passing through the inner ring segment and the outer ring segment and perpendicular to the optical axis, and the light-through element satisfies the following conditions: 10°≤OALE≤90°; 10°≤IALE≤90°, wherein OALE is an inclination angle of the first inner inclined portion relative to the horizontal reference plane, and IALE is an inclination angle of the second inner inclined portion relative to the horizontal reference plane.

32. The optical imaging lens of claim 31 , wherein the inner ring segment has a straight portion correspondingly extending along the optical axis and connecting the first inner oblique portion and the second inner oblique portion, and the definition of the TILE corresponds to the thickness of the straight portion.

33. The optical imaging lens according to any one of claims 28 to 32, wherein the light-transmitting element satisfies the following condition: 0.008 mm ≤ TOLE ≤ 0.2 mm, wherein TOLE is the maximum outer peripheral thickness of the light-transmitting element corresponding to the outer ring segment.

34. The optical imaging lens of any one of claims 28 to 32, wherein the shape of the inner ring segment comprises one of a trapezoid, a cone, an angle, and a polygon.

35. The optical imaging lens as claimed in claim 23, wherein the at least one light transmitting element comprises a first light transmitting element, a second light transmitting element and a third light transmitting element, the first light transmitting element is disposed on the object-side surface of the first lens, the second light transmitting element is disposed between the image-side surface of the first lens and the object-side surface of the second lens, and the third light transmitting element is disposed on the image-side surface of the second lens.

36. The optical imaging lens as described in claim 35, wherein the first lens positioning unit has a light-shielding ring surrounding the optical axis and having an inner edge surrounding the object-side port, and facing the object-side surface of the lens and corresponding to the optically invalid area; in addition, the first light-transmitting element is disposed on the object-side surface of the lens and is fixed between the first lens and the light-shielding ring.

37. The optical imaging lens as claimed in claim 36, wherein the aperture of the light-transmitting hole is smaller than or equal to the inner diameter of the object-side port of the lens barrel.

38. The optical imaging lens as claimed in claim 22, wherein the light-transmitting element satisfies the following condition: 0 μm≤CONP≤50 μm, wherein the light-transmitting hole has a light-transmitting central axis, and CONP is the distance between the light-transmitting central axis at the light-transmitting hole and the optical axis in a direction perpendicular to the optical axis.

39. The optical imaging lens of claim 22, wherein the first lens positioning unit satisfies the following condition: 0 μm ≤ CONE ≤ 50 μm, wherein the object side port has an opening central axis, and CONE is a distance between the opening central axis at the object side port and the optical axis in a direction perpendicular to the optical axis.

40. The optical imaging lens of claim 22, wherein the optical imaging lens satisfies the following condition: 0 μm ≤ CON ≤ 50 μm, wherein the light-through hole has a light-through central axis, the object-side port has an opening central axis, and CON is a maximum distance between the light-through central axis and the opening central axis between the light-through hole and the object-side port in a direction perpendicular to the optical axis.

41. The optical imaging lens of claim 22, wherein a material of the light transmitting element comprises one of metal, plastic, carbon, PET and polyimide.

42. The optical imaging lens as claimed in claim 22, further comprising an image sensing module, wherein the image sensing module is installed in the first lens positioning unit and is located correspondingly at a position of the imaging plane.

Images